Call on my cell, called back and got a 'not in service' recording.  Gonna guess it is overseas telemarketers masking with a false number, just a guess though.

Comcast bill collector, not a telemarketer.

I keep getting calls from this number as well as other numbers from the same caller. They say they are a pharmacy and when I ask them to quit calling me and take me off their list they scream "THEN WHY DID YOU TAKE THE CALL??!?!!?".... And I mean SCREAM!!!! To the point it's almost scary!!!!! I've threatened to call the police and they scream more!!!!! The same number even comes through from different cities and countries. How do I get them to stop???

telemarketer ; no answer

They call at least 5 times a day. Why doesn't Chuckie Schumer do something about this. The Congress Do Not Call list is a joke. Those clowns in Washington accomplish nothing.